onStyleRow event does not retain on doing sorting, filtering or pagination

I have using dojo 1.10 enhanced grid. Here, I am using onStyleRow event where I will style the row. It works perfect on the first load but when I tried to do paging, sorting and filtering, it does not know the remember the rows and apply new style on the old row index. Such as if I highlighted 2 and 4 row while on load. Now when I do the sorting the rows data will change but here it applies new style to 2 and 4 row again irrespective of the rows changed. Is this a bug in the existing code?

I am doing like this -

 dojo.connect(mygrid, 'onStyleRow', this, function(row) {
  if (fixedDataItems[row.index] == '1' && hideFixesVisibility == 'Editable')  //some condition
      row.customStyles += 'background-color: blue !important;';
  else
      row.customStyles += 'color: black !important;';
  });

I have not found anything related to it in document. Does anyone has knowledge of this?

try this

http://jsfiddle.net/bnqkodup/374/

HTML

<div id="container" class="claro">
    <div id="gridDiv"></div>
</div>

JS

dojo.require("dojox.grid.EnhancedGrid");
dojo.require("dojo.data.ItemFileWriteStore");
dojo.require("dojo.on");

dojo.ready(function (on) {
    /*set up data store*/
    var data = {
        identifier: 'id',
        items: []
    };
    var data_list = [{
        col1: "normal",
        col2: false,
        col3: 'But are not followed by two hexadecimal',
        col4: 29.91
    }, {
        col1: "important",
        col2: false,
        col3: 'Because a % sign always indicates',
        col4: 9.33
    }, {
        col1: "important",
        col2: false,
        col3: 'Signs can be selectively',
        col4: 19.34
    }];
    var rows = 60;
    for (var i = 0, l = data_list.length; i < rows; i++) {
        data.items.push(dojo.mixin({
            id: i + 1
        }, data_list[i % l]));
    }
    var store = new dojo.data.ItemFileWriteStore({
        data: data
    });
function formatLink(value){
        return '<a href="#">'+value+'</a>';
    }
    /*set up layout*/
    var layout = [
        [{
            'name': 'Column 1',
            'field': 'id',
            formatter: formatLink

        }, {
            'name': 'Column 2',
            'field': 'col2'
        }, {
            'name': 'Column 3',
            'field': 'col3',
            'width': '230px'
        }, {
            'name': 'Column 4',
            'field': 'col4',
            'width': '230px'
        }]
    ];

    /*create a new grid:*/
    var grid = new dojox.grid.EnhancedGrid({
        id: 'grid',
        store: store,
        structure: layout,
        rowSelector: '20px'
    },
    document.createElement('div'));

    /*append the new grid to the div*/
    dojo.byId("gridDiv").appendChild(grid.domNode);

    /*Call startup() to render the grid*/
    grid.startup();

    //dojo.on(grid,"CellClick",function(evt){

    /* <=search for the column here */
   //var idx = evt.cellIndex;
   //var cellNode = evt.cellNode;
   //if(cellNode){
      //cellNode.style.backgroundColor = "green";
   // }
    //if(evt.cellIndex==1){
    //this.set('style','background-color:red;');
   // }
   // });
     dojo.connect(grid, 'onStyleRow', this, function(row) {
  var item = grid.getItem(row.index);
        if(item){
        //console.log(store);
            var type = store.getValue(item,'col1',null);

            if(type == "normal"){
                row.customStyles += "color:red;";
                //row.customClasses += " dismissed";
            }
        }
  });
});

CSS

@import"../lib/dojo/resources/dojo.css";
 @import"../lib/dijit/themes/claro/claro.css";
 @import"../lib/dojox/grid/enhanced/resources/claro/EnhancedGrid.css";
 @import"../lib/dojox/grid/enhanced/resources/EnhancedGrid_rtl.css";

/*Grid need a explicit width/height by default*/
 #grid {
    width: 1110px;
    height: 494px;
    color: #000000;
}